Improvement in lamp-reflectors



w. 'n'. CUMMINGS.

' LAMP REFLECTOR. :7 N0. 187.706.. Patented Feb. 27, 1877.

} Y v d7- cifl 1 N.PETERS, FHOTO-UTHOGRAFNER. WASHINGTON, D. C.

' as may be desired. This difficulty is but par- 'lowing way: A sleeveor ferrule, c, is so fitted WILLIAM D. CUMMINGS, OF PITTSBURG,PENNSYLVANIA.

IMPROVEMENT IN LAMP R EFLE CTORS.

Specification forming part of Letters Patent No. 187,706, datedFebruary27,1877; application filed December 26, 1876.

To all whom it may concern:

Be it known that I, WILLIAM D. CUMMINGS, of Pittsburg, county ofAllegheny, State of Pennsylvania, have invented or discovered a new anduseful Improvement in Lamp and Gas-Light Reflectors; and I do herebydeclare the following to be a full, clear, concise, and exactdescription thereof, reference being had to the accompanying drawing,making a part of this specification, in which-like letters indicatinglike parts- Figure 1 represents, in side elevation, my improvedadjustable reflector. Fig. 2 is an enlarged detached view of theadjusting mechanism, showing the adjustment proper to reflect lightdownward; and Fig. 3 is a like view, with the proper adjustment toreflect light upward.

In the use of artificial lights considerable inconvenience isexperienced in obtaining the proper quantity of light at such pointsonly tially overcome by using the ordinary fixed reflector, as the pointtoward which the light is directed cannot be changed as occasion mayrequire, in order to suit the convenience of the user.

My adjustable reflector is designed to practically overcome thesedifficulties, and com bines in its construction cheapness, simplicity,and convenience. It consists, in its main features, of a standard, a, orsuitable support, and a reflector, B, so connected and jointed to thestandard a that it may be set at any elevation upon the standard, andthere adjusted to reflect light at any angle relative to the source orline of light, either in a vertical or horizontal plane.

I secure this adjustable feature in the folto the standrd a that it maybe moved up and down the same, but with sufficient friction to enable itto be held at any desired point on the standard, or it may be providedwith a set-screw, b, for more securely fixing it at the desired point. Iattach the-reflector B to this sleeve 0 at or near its bottom end by anordinary hinge-joint, as at 0, either directly or through the medium ofan interposed block or fastening device, a, properly secured to the backof the reflector at or near its center.

This jointed connection of the reflector allows it to be so adjusted asto reflect light in any direction, up or down, in a vertical plane.

To secure the reflector at such point as may be desired with referenceto this adjustment, I attach a ratchet-bar, n, to the upper side of theblock z, having teeth 8 on its upper edge,

inclining toward the reflector, and a loop or pawl, r, is join ted tothe upper end of the sleeve 0. This pawl is so placed in relation to theteeth of the ratchetbar that it will engage them, and thus support thereflector, as shown in Figs. 1, 2, and 3.

The manner of securing this adjustment is clearly illustrated in thedrawings.

Adjustmentin a horizontal plane is secured by turning or rotating thesleeve 0, with its attached reflector, about the standard a-.

By these three means of adjustment, as described, I am enabled, withouttrouble or delay, to direct the light from a lamp or gas-jet in anydesired direction and upon any desired object.

The base A may, if desired, be made large enough to receive and hold alamp, or the source of light may be entirely independent of it.

The advantages arising from such a reflector are apparent, and it is ofgreat service and convenience, not only in the private study, but alsoin public halls and buildings.

Any known flexible joint suitable for the purpose may be substituted forthe hingejoint 0, and if the same be made of an elastic strap, theratchet and pawl should be arranged to hold against the direction of theelastic force of such elastic strap; and the reversal of the arrangementof these parts, their manner of operation remaining the same, is herebyincluded herein.

With a slight modification, such as will'suggest itself to the skilledmechanic, my reflector may be fitted to side or bracket lights with veryuseful results, and other like modifications and adaptations, especiallysuch as are known in the arts for circular adjustments, may be madewithout departing from the scope of my invention.

The application of this device to a bracket, D, is also represented inFig. 3.

I claim herein as my invention-- 1. Theflexible joint, ratchet, andpawl,com- I vertically, horizontally, and angularly, subbined with areflector, substantially as destantially as described. scribed, wherebyan angular adjustment of In testimony whereof I have hereunto set thereflector is effected. my hand.

2. In combination with a reflector, B, a sleeve, movable on its standardboth verti- WILLIAM (JUMMINGS' cally and by a rotary movement, aflexible Witnesses: joint, ratchet, and pawl, whereby, in the man- J. J.MCCORMICK, ner set forth, the reflector may be adjusted OLAUDIUS L.PARKER.

